This raster dataset shows the modelled P50 distribution of the theoretical potential 'heat recoverable' (Hrec) for the combined Upper Devonian Stratheden Group and Kinnesswood Formation across the Midland Valley of Scotland, at a resolution of 500 m x 500 m. Hrec is calculated for resource temperatures greater than 50 °C, which represents minimum temperature required for direct use of heat from hot sedimentary aquifer resources. Hrec represents the proportion of accessible heat in an aquifer according to the USGS definition described in e.g. Muffler and Cataldi (1978). Its calculation is part of the research published by Kearsey, T.I., Receveur, M. and Monaghan, A.A., 2024. Modelled hot sedimentary aquifer geothermal potential of Upper Devonian strata in the Midland Valley of Scotland. Areas of high uncertainty are delineated in the published paper and the theoretical potential of the recoverable heat is presented with very high uncertainty.